| 2023-10-13 10:24:46 |
Jack Shaw |
description |
Reproduced in 2.9 and 3.3
juju refresh help text states
```
Please note that --switch is dangerous, because juju only has limited
information with which to determine compatibility; the operation will succeed,
regardless of potential havoc, so long as the following conditions hold:
- The new charm must declare all relations that the application is currently
participating in.
- All config settings shared by the old and new charms must
have the same types.
```
Juju also sometimes verifies the charm names in metadata match
However, no such validations take place
```
$ juju deploy ch:ubuntu
$ mkdir ubuntu
$ juju download ubuntu --filepath ubuntu/ubu.charm
$ cd ubuntu
$ unzip *
(edit config.yaml such that)
$ cat config.yaml
options:
hostname:
type: int
default: 0
description: Override hostname of machine, when empty uses default machine hostname
$ cd ..
$ juju refresh ubuntu --switch ./ubuntu
Added local charm "ubuntu", revision 14, to the model
(success!)
```
Note, the above fill fail if you change the name of your local charm. However:
```
$ juju deploy zookeeper --channel 3
$ juju refresh zookeeper --switch landscape-server --channel stable
```
will succeed |
Reproduced in 2.9 and 3.3
juju refresh help text states
```
Please note that --switch is dangerous, because juju only has limited
information with which to determine compatibility; the operation will succeed,
regardless of potential havoc, so long as the following conditions hold:
- The new charm must declare all relations that the application is currently
participating in.
- All config settings shared by the old and new charms must
have the same types.
```
Juju also sometimes verifies the charm names in metadata match. However, I do not believe this is documented
However, no such validations take place
```
$ juju deploy ch:ubuntu
$ mkdir ubuntu
$ juju download ubuntu --filepath ubuntu/ubu.charm
$ cd ubuntu
$ unzip *
(edit config.yaml such that)
$ cat config.yaml
options:
hostname:
type: int
default: 0
description: Override hostname of machine, when empty uses default machine hostname
$ cd ..
$ juju refresh ubuntu --switch ./ubuntu
Added local charm "ubuntu", revision 14, to the model
(success!)
```
Note, the above will correctly fail if you change the name of your local ubuntu charm. However:
```
$ juju deploy zookeeper --channel 3
$ juju refresh zookeeper --switch landscape-server --channel stable
```
will incorrectly succeed, according to this (undocumented?) feature |
|
